The chemical Cilomilast has a designated molecular formula of C20H25NO4 and a molecular weight of 343.423 g/mol. Synonyms may include: Ariflo, SB 207499, SB207499, cis-4-Cyano-4-(3-cyclopentyloxy-4-methoxyphenyl)cyclohexanecarboxylic acid, cis-4-(3-(Cyclopentyloxy)-4-methoxyphenyl)-4-cyanocyclohexane-1-carboxylic acid, UNII-8ATB1C1R6X (ChemID). Cilomilast has been assigned a MeSH pharmacological action of: Phosphodiesterase 4 Inhibitor.